88 Blackline Masters/STATISTICSUSING THE SHARP EL-9600
Copyright © 1998, Shar p Electronics Cor poration. Permission is granted to photocopy for educational use only.

Activity 1 Perform a one-small-sample hypothesis test for

the population mean.

The amount of money spent by 12 randomly selected customers at a
supermarket is provided below. Enter the data in L1 and test the alternate
hypothesis that the average spent is more than $75.
98 79 151 38 116 55
42 61 88 64 120 93
Alternate hypothesis is _______________
p= __________
Decision is to _______________ the null hypothesis that µo=75.

Activity 2 Perform a two-small-sample hypothesis test for

the population means.

The time in minutes to assemble a product using two different procedures is
provided below. Enter Procedure 1's times into L1 and Procedure 2's times into
L2. Test the alternative hypothesis that Procedure 1 provides higher times than
Procedure 2. Pool the standard deviations for the test.
Procedure 1 54 61 58 56 63 52 60
Procedure 2 50 56 56 59 53 47 52
Alternate hypothesis is _______________
p= __________
Decision is to _______________ the null hypothesis that µ1=µ2.
STATISTICAL TESTS
10.3
NAME _____________________________________________________ CLASS __________ DATE __________